/* $NetBSD: cu.c,v 1.23 2016/01/03 15:38:29 christos Exp $ */
/*
* Copyright (c) 1983, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#include <getopt.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)cu.c 8.1 (Berkeley) 6/6/93";
#endif
__RCSID("$NetBSD: cu.c,v 1.23 2016/01/03 15:38:29 christos Exp $");
#endif /* not lint */
#include "tip.h"
__dead static void cuhelp(void);
__dead static void cuusage(void);
/*
* Botch the interface to look like cu's
*/
void
cumain(int argc, char *argv[])
{
int c, i, phonearg = 0;
int parity = 0; /* 0 is no parity */
int flow = -1; /* -1 is "tandem" ^S/^Q */
static int helpme = 0, nostop = 0;
int useresc = '~';
static char sbuf[12];
int cmdlineBR;
extern char *optarg;
extern int optind;
static struct option longopts[] = {
{ "help", no_argument, &helpme, 1 },
{ "escape", required_argument, NULL, 'E' },
{ "flow", required_argument, NULL, 'F' },
{ "parity", required_argument, NULL, 'P' },
{ "phone", required_argument, NULL, 'c' },
{ "port", required_argument, NULL, 'a' },
{ "line", required_argument, NULL, 'l' },
{ "speed", required_argument, NULL, 's' },
{ "halfduplex", no_argument, NULL, 'h' },
{ "nostop", no_argument, &nostop, 1 },
{ NULL, 0, NULL, 0 }
};
if (argc < 2)
cuusage();
CU = NULL;
DV = NULL;
BR = DEFBR;
cmdlineBR = 0;
while((c = getopt_long(argc, argv,
"E:F:P:a:p:c:l:ns:hefot0123456789", longopts, NULL)) != -1) {
if (helpme == 1) cuhelp();
switch(c) {
case 'E':
if(strlen(optarg) > 1)
errx(3, "only one escape character allowed");
useresc = optarg[0];
break;
case 'F':
if (strncmp(optarg, "hard", sizeof("hard") - 1 ) == 0)
flow = 1;
else
if (strncmp(optarg, "soft",
sizeof("soft") - 1 ) == 0)
flow = -1;
else
if(strcmp(optarg, "none") != 0)
errx(3, "bad flow setting");
else
flow = 0;
break;
case 'P':
if(strcmp(optarg, "even") == 0)
parity = -1;
else
if(strcmp(optarg, "odd") == 0)
parity = 1;
else
if(strcmp(optarg, "none") != 0)
errx(3, "bad parity setting");
else
parity = 0;
break;
case 'a':
case 'p':
CU = optarg;
break;
case 'c':
phonearg = 1;
PN = optarg;
break;
case 'l':
if (DV != NULL)
errx(3,"more than one line specified");
if(strchr(optarg, '/'))
DV = optarg;
else
(void)asprintf(&DV, "/dev/%s", optarg);
break;
case 'n':
useresc = -1;
break;
case 's':
BR = atoi(optarg);
break;
case 'h':
HD = TRUE;
break;
case 'e':
if (parity != 0)
errx(3, "more than one parity specified");
parity = -1; /* even */
break;
/* Compatibility with Taylor cu */
case 'f':
flow = 0;
break;
case 'o':
if (parity != 0)
errx(3, "more than one parity specified");
parity = 1; /* odd */
break;
case 't':
HW = 1, DU = -1, DC = 1;
break;
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
cmdlineBR = cmdlineBR * 10 + (c - '0');
BR = cmdlineBR;
break;
default:
if (nostop == 0)
cuusage();
break;
}
}
argc -= optind;
argv += optind;
switch (argc) {
case 1:
if (phonearg)
errx(3, "more than one phone number specified");
else
/* Compatibility with Taylor cu */
if(!strcmp(argv[0], "dir")) {
HW = 1; DU = -1; DC = 1;
} else
PN = argv[0];
break;
case 0:
/*
* No system or number to call. We're "direct", so use
* the tty as local.
*/
HW = 1; DU = -1; DC = 1;
break;
default:
cuusage();
break;
}
(void)signal(SIGINT, cleanup);
(void)signal(SIGQUIT, cleanup);
(void)signal(SIGHUP, cleanup);
(void)signal(SIGTERM, cleanup);
/* (void)signal(SIGCHLD, SIG_DFL) */ /* XXX seems wrong */
/*
* The "cu" host name is used to define the
* attributes of the generic dialer.
*/
(void)snprintf(sbuf, sizeof sbuf, "cu%d", (int)BR);
if ((i = hunt(sbuf)) == 0) {
errx(3,"all ports busy");
}
if (i == -1) {
errx(3, "link down");
}
setbuf(stdout, NULL);
vinit();
switch (parity) {
case -1:
setparity("even");
break;
case 1:
setparity("odd");
break;
case 0:
setparity("none");
break;
default:
setparity("none");
break;
}
switch (flow) {
case -1:
if(nostop) {
setboolean(value(TAND), FALSE);
setboolean(value(HARDWAREFLOW), FALSE);
}
else {
setboolean(value(TAND), TRUE);
setboolean(value(HARDWAREFLOW), FALSE);
}
break;
case 1:
setboolean(value(TAND), FALSE);
setboolean(value(HARDWAREFLOW), TRUE);
break;
case 0:
default:
setboolean(value(TAND), FALSE);
setboolean(value(HARDWAREFLOW), FALSE);
break;
}
setcharacter(value(ESCAPE), useresc);
setboolean(value(VERBOSE), FALSE);
if (HD)
setboolean(value(LECHO), TRUE);
if (HW) {
if (ttysetup((speed_t)BR) != 0) {
errx(3, "unsupported speed %ld", BR);
}
}
if (tip_connect()) {
errx(1, "Connect failed");
}
if (!HW) {
if (ttysetup((speed_t)BR) != 0) {
errx(3, "unsupported speed %ld", BR);
}
}
}
static void
cuusage(void)
{
(void)fprintf(stderr, "Usage: cu [options] [phone-number|\"dir\"]\n"
"Use cu --help for help\n");
exit(8);
}
static void
cuhelp(void)
{
(void)fprintf(stderr,
"BSD tip/cu\n"
"Usage: cu [options] [phone-number|\"dir\"]\n"
" -E,--escape char: Use this escape character\n"
" -F,--flow {hard,soft,none}: Use RTS/CTS, ^S/^Q, no flow control\n"
" -f: Use no flow control\n"
" --nostop: Do not use software flow control\n"
" -a, -p,--port port: Use this port as ACU/Dialer\n"
" -c,--phone number: Call this number\n"
" -h,--halfduplex: Echo characters locally (use \"half duplex\")\n"
" -e: Use even parity\n"
" -o: Use odd parity\n"
" -P,--parity {even,odd,none}: use even, odd, no parity\n"
" -l,--line line: Use this device (ttyXX)\n"
" -n: Disable escape character processing\n"
" -s,--speed,--baud speed,-#: Use this speed\n"
" -t: Connect via hard-wired connection\n");
exit(0);
}